Disk cultivator



March R. KILLEFER DISK CULTIVATOR Filed May 12, 1924 2 Sheets- Sheet 1 March ,1927. 1,619,208

' R. KELLEFER DISK CULTIVATOR Filed May 12, 1924 2 Sheets-Sheet 2 88 77 /5 w-r-k j-illililllllllll l.Il

Patented Mar. 1, 1927.

UNITED STATES ROBERT KILLEFER, 01' LOS ANGELES, CALIFORNIA, ASSIGNOR TO THE KILLEFER' PATENT OFFICE. f

MANUFACTURING COMPANY, OF LOS AN GELES, CALIFORNIA, A CORPORATION 01' CALIFORNIA.

DISK CULTIVATOR.

Application filed May 12,1924. Serial No. 712,639.

This invention relates to cultivators, and is more particularly directed to that type of cultivator having the cultivator frames arranged in paired gangs and provided-with.

in different angulafrlatioris by the pull of the tractor or other draft power and in that respect is similar or is analogous to the cultivator set forth in that particular patent heretofore referred to. However, in this cultivator it has been necessary for the one driving the tractor or the other draft power element to stop the draft of the cultivator in order to adjust the cutting angle of the cultivator members and either back or pull the tractor forward to properly space the draft bars in relation to the draft connection with the cultivator frames before any adjustment could be effected. It has also been found difiicult to properly adjust the cutting angles of the cultivator members in that particular cultivator and it has been necessary for the operator'to leave the seat of the tractor or draft device to properly engage a link of the chain with the. hook. When approaching a tree, or when it is desired to make a sharp curve, it has been very difficult to either get close to the tree or make the said sharp turn, due to the fact that with the use of the chain draft as illustrated in that patentheretoforereferred to, it has not been possible to back the cultivator when the same has come too close to a tree or other vegetation. or in a sharp curve of the field being cultivated. An object of this invention is to provide a disk cultivator and shaft connection therefore in which the parts are so constructed and assembled as to enable an easy shifting of the cutting angle of the disks from a -tractor seat, or the seat of a similar draft device, without the necessity of the operator leaving the seat of the tractor and whicli shlfting means are positive in operation and provide a means for rigidly holding the respective parts of the implement in any adjusted osition. p

Anot er-object of this invention is to provide a construction of great durability.

Another object of this invention is to provide a cultivator which is inexpensive in construction and of comparatively simple operation. I

Other objects and advantages will be apparent from the following detailed description of a preferred embodiment thereof as illustrated in the accompanying drawings.

In the drawings i Fig. 1 is a plan view of a cultivator em bodymg this invention illustrating the parts angled to a cutting sition.

Fig. 2 is a plan vlew thereof, the frames of each 1 gang being in alignment with one another for operating over the groundwithout cultivating.

Fig. 3 is an enlar ed fragmental plan view of a slidable dra connection embodying this invention for variation of the angle of the cultivator members.

Fig. 4 is a sectional side elevation of the draft connection illustrated in Fig. 3.

Fig. 5 is a sectional front elevation taken on the line 5-5 of Fig. 3.

Fig. 6 is a sectional elevation taken on the line 6-6 of Fig. 3. i

In this illustration of this invention thereare provided a pair of front cultivator frames 1, and a pair of rear cultivator frames 2. Each frame comprises trans- 6 fastened to the outer end of the bars 3,

4 and 5.- Inner bars" 7 are fastened to the inner ends of the. bars 3, 4 and 5 frame are bearings 9. The bearings of each frame support an axle 10. Each axle is ro- 'ided with a series of cultivator mem rs 11, spaced apart by sleeves or spools 12.

till

ill ti It may be desirable to term the axles 10 of square cross section and the disks 11 and sleeves 12 with similar square holes respectively adapted to fit the square portions of the axle for the purpose of preventing the cultivatormembersll from turning relative to the axle 10 on which theyare mounted. Means are provided for connecting the inner ends of front frames withthe draftbar 17, which means are vertically rigid but horizontally extendible and are preferably of the following construction:

The inner bar 7, of the :front frame, extends forward to form the arms 13, which arms13 are pivotally connected to the bell crank levers 14, as at, 15. The bell crank levers are pivotally connected together by a pair of links 16, which links 16 are riveted or bolted to a slide or draft bar 17. The slide 18 is mounted on the draft bar 17 and is pivotally connected through the links 19 with the bell crank levers 14. A slide frame 20 is adapted to slide on the draft bar 17., the said slide frame 20 being pivotally connected by the bars 21 with the front frames as illustrated at 22, it, however, being; obvious that the bars 21 might be pivoted anywhere at any position along the bars 8 oi the trout trams and are so positioned at the tntreme outer end at the bars 3 to pin vido it greater leverage for ease in operation of change of angle oil the cultivi members. 'lhe slide frame 930 preferably of :t'ollcwing construction:

.th pair ct irons 23 riveted to pair oi Hi, there bein tweon irons to the alias tiojn between the Li? lease the lever 31 and extends forward to any suitable position for operation. In some particular instances it may be desiable to restrict tl1e extreme angle to which the cultivator members may be set. For this purpose a plurality of holes 36 are drilled or otherwise cut in the members 23 so that a bolt may be passed *therethrough. At the end of the ratchet bar 26 there is a vertical extension 37 which vertical extension 37 is aligned with and may engage the bolt when positioned in the desired hole 36. A draft connection to the source of motive power for the cultivator is provided and may be of the following construction:

Secured to the end of the slide frame 20 are a pair of short angle irons 38 which angle irons 38 may be riveted to and aligned irons 23 and the angle irons 38 and is squarely bolted or riveted thereto as illustratedat 39, there being provided in this plate a plurality of vertlcally spaced holes 40 into which the bolt of a draft clevis may be passed to properly align the drafting force with the cultivator.

When it is desired to transport this cultivator along a roadway it is absolutely essential that means he provided for positively maintaining the angle of the disks parallel to the direction of travel so that the roadway will not be out up. Tlheretom, in. connection with this novel'dratt connectionzithe tollowing means are provided to maintain such an ansic of the cutting disks. A hole 4t? is drilled or otherwise cut in the dralt l? in a position to receive a belt or similar obstacle to engage the slide it; to absolutely maintain the slide id in its lorward position. so that it will be impossible for any variation of the angle of the disks to he'eilected during the travel over the roadwa its this invention, relates primarily to this draft connection combination with that cultivator as more particularly described those Letters Patent issued Daniel .L "i i atters, illlarch id, lllil l, and bearing the number out L 18? llft, applicant; does not deem it necess ry to go into the exact construction of this cultivator other than. to set tort-i law oi the tester s which are ticularly adaptable in coinhi on with thisinvention.

Connecting the inner ends oi the iron" trainee l a yoke ll which volts ii is con nested to the yoke by means oi a pair at bars elfil. The yoke i connects the inner end iramesih l beii'ig understood that We and li,.ewisc act to aid in the holding trainee mood relation. are also the bars cured to the pairs ot trainee l and Elite 'iiin this spaced relati it and It, i. frames F3 are held in s lenced role the :lront trainee it by means of the There ii iii bars 45, which bars are pivotally connected with the inner bars 7 of the front frame and with the transverse bars 3 of the to prevent angling of the gangs of disks or disk carrying frames. The pin i7 is removed and the operator pulls on the flexible connecting member 48, moving the lever 31 forward and raising the pawl 29 from engagement with the rack 26. On forward motion of the draft implement with which the slide frame 20 is Connected, the slide frame 20 slides along the draft bar 17 so that a pull is exerted through the bars 21 to the outer carriers of the disk carrying frames 1 so as to pull the said corners forward. During this movement, the inner corners of the disk carrying frames 1 are permitted-to move inwardly toward each other through the con nection provided by the toggle links 14: with the draft bar 17. The slide 18, with which the toggle links 11 areconnected, and the bars 13 provide means for equaling the angling of the disk carrying frames 1 when a forward pull is exerted upon the bars 21, as above set forth, so as to insure that each of the disk carrying frames 1 will be angled an equal amount. This forward pull upon the side frame 20, it will therefore be seen,

changes the position of the relative parts of the disk harrow from the position'illustrated in Fig. 2 to the position illustrated in Fig. 1.

\Vhen the disk carrying frames have been angled the desired amount, the operator releases the fiexible connection 48, and the spring pivots the lever 31 on the pin 32, returning the pawl 29 to engagen'ient with the rack 26. T heengagement of the pawl 29 with the rack 26 prevents further relative movement of the slide 20 and draft bar 17, thereby holding the disk carrying frames in the desired working position.

When it is desired to straighten the disk carrying frames 1 to the non-dishing position, the draft implement is reversed, causing the slide frame 20 to slide rearwardly along the draft bar 17 to impart a push against the outer ends of the disk carrying frames 1 to rock the frames to the straight position illustrated in Fig. This straightening ot' the frames 1 may be accomplished without actuation of the cable 18 to disengage the pawl 29 from the rack 26, as during this movement the pawl will slide along the rack 26, the rocking of the disk carrying frames 1 being cli'ected through the yoke 11 which maintains the point of connection of the disk carrying frames 1 with the yoke 41 at a predetermined distance apart and the points of connection of the yoke 41 with the disk carrying frame 1 from the pivot points around which the disk carrying frames 1 rock.

Having fully described a preferred embodiment of this invention, it is to be understood that I do not wish to be limited to the exact modification shown which may obviously be varied without departing from the I spirit of the appended claims.

What I claim is:

1. A cultivator comprising a front pair of frames, a draft bar, a member slidably mounted on the draft bar, a' pair of bell crank levers, each being pivoted at the center to the draft bar, and connected at their forward ends to the slidable membenand pivoted at their other ends to rods secured to the front frames, aslide frame, means for engaging the slide frame with the draft bar, and means adju'stabl secured to the slide frame for limiting tie sliding extension of the draft bar within the slide frame.

2. In an implement of the class described, the combination of a" front pair of frames, a draft-bar, a slide frame, a ratchet bar secured to the draft-bar, a pawl pivotally supported by the slide frame, an actuating lever pivotally supported within the slide frame and adapted to actuate the pawl, a control rope secured to the actuating lever, a slide mounted on the draft-bar, a pair of bell-crank levers pivotally secured to the draft-bar, a link pivotally connected to one end of each bell-crank lever and to the latter said slide, bars connecting the opposite end of each of the bell-crank levers and the inner ends of the first said frames, bars connecting the slide frame and the outer ends of the first said frames, and means secured to the slide frame for connecting the same with a draft implement.

3. In an implement of the class described,

the combination ofa front pair of frames, a draft bar, a slide frame mounted on the draft bar, a ratchet ba'r secured to the draft bar, a pawl'pivotally mounted by the slide frame, an actuating lever pivotally supported within the slide frame and adapted to actuate the pawl, 21 control rope secured to the actuating lever, a pair of bell-crank levers pivoted'at their centers to the draft bar, an elementslidably mounted on the draft bar and pivotally secured to the forward ends of the bell-crank levers, and a bar secured to each front frame and pivotally secured to the opposite end of the bell corners of the said front frames, :1 pair of bell-crank levers, means for pivotally securing the bell-crank levers to the said draft bar at the center of the bell-crank levers 5 and each of said bell-crank levers being pivotally secured at one end to a bar secured to the said front frames, a slide mounted on the draft bar, and means pivotally connecting the other end of each of the said bell-crank IeVersWith the said slide. 19

Signed at Los Angeles, Calif., this 3rd day of May, 1924.

ROBERT KILL EFEB. 

